How does decompression melting generate magma at rift zones?
What will be an ideal response?
Answer: As the tectonic plates pull apart, pressure on the upper mantle will decrease while the temperature will remain constant. This change in pressure will allow some minerals to change phase from solid to liquid, a process that generates magma.
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A country with a large proportion of its population in a preproductive age group (age 0-14) is most likely to experience a future population growth that
A. declines rapidly. B. declines slowly. C. remains stable (unchanging). D. increases slowly. E. increases rapidly.
Contrast regional floods and flash floods
What will be an ideal response?
Which of the following countries is NOT in Middle America?
a. Belize b. Costa Rica c. Guatemala d. Honduras e. Columbia
Photosynthesis produces sugars from
A. Carbon dioxide, enzymes, and solar energy B. Oxygen, water, and solar energy C. Oxygen, carbon dioxide, and water D. Water, other sugars, and oxygen E. Water, carbon dioxide, and solar energy